VitA-POS Eye Ointment

Question 1

Is there a preservative in this product, explain why?.

Answer 1

• No, because product is low in water making it more stable as microorganism growth isn’t supported, also a preservative would cause irritation

Question 2

Excluding retinol (which is the active ingredient), identify the main excipient in the product which may cause side effects for the patient, and explain why?

Answer 2

• Wool fat

* Some are allergic to the lanolin in it

Question 3

Describe two disadvantages for the patient when using this product compared to eye drops?

Answer 3

• Can be hard to see properly after putting the ointment on your eyes
• Can could eye lids to stick and become matte

Question 4

Describe two advantages for the patient when using this product compared to eye drops?

Answer 4

• Stays on the eye longer than eye drops, so easier for compliance
• Greater storage stability

Question 5

What is the method of levigation in reference to the extemporaneous production of a semi-solid?

Answer 5

• levigation – the application of pressure using a tile and spatula to incorporate a powder into a semi-solid base and avoid a gritty product

Question 6

What is the method of trituration in reference to the extemporaneous production of semi-solids?

Answer 6

• trituration – a method of incorporating liquids or powders using a ceramic tile and spatula where powders are added by the method of increasing proportions and liquids are added to a well in the semi-solid base